Tellurian



Nu. era-,mJ Patented Oct. 25, I898. a H c. .1. BOEHM.

TELLURIAN.

(Application filed mm. as, 1898.) (No Model.) 2 Sheets-Sheet I.

Patented Oct. 25, I898.

C. J. BOEHM.

T E L L U R l A N (Application filed Feb. 28, 1898.)

2 Shgets-Sheat 2.

(No Model.)

51/ MEI? as an. woYou-mu, ms

. NrTED STATES r PATENT OFFICE.

CHARLES J. BOEHM, OF MILWAUKEE, WISCONSIN.

TELLURIAN.

SPECIFICATION formingpart of Letters Patent No. 613,111, dated October 25, 1898.

Application filed February 28, 1898. emu No. 671,962. (No model.)

To all whom it may concern:

Be it known that I, CHARLES J. BOEHM, a citizen of the United States, and a resident of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Tellurians; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention has for its object to provide simple, economical, and automatic tellurians.

It therefore consists in certain peculiarities of construction and combination of parts constituting the apparatus hereinafter specified with reference to the accompanying drawings and subsequently claimed.

Figure 1 of the drawings represents a partlysectional elevation of a tellurian constructed in accordance with my invention; Fig. 2, a plan View of a portion of the tellurian, partly in horizontal section; Fig. 3, a detail plan view, partly in section, illustrating a gear mechanism that constitutes part of said tellurian; and Fig. 4, a detail elevation,partly in section, illustrating another gear mechanism embodied in the aforesaid tellurian.

Referring by letter to the drawings, A represents a preferably circular base, and at intervals of concentric circles thereon the seasons and months of one year and the numerical order of days in each month are denoted. The constellations of the zodiac may be also denoted in their proper order upon the base. A circular plate B of suitable diameter is provided with a central depending boss 6, having a bottom flange made fast to the center portion of the base, upon the upper side of same.

Extending up through base A and plate B, 1

central of the same, is a rigid pivot-post O for a rotary clock D, that constitutes a motor for the various cooperating gear mechanisms hereinafter specified. r

The hour mechanism of the clock has universal-joint connection 0 with a rod E, that is also connected by a universal joint (1 with an arbor F, suspended in bearings under a plate G, attached to said clock to extend at right angles thereto beyond the plate B, its outer end being'provided with a pointer e, that travels in a circle parallel to that on which the numerical order of days of the months are denoted on the base A of the apparatus.- A

bracket.

worm f, fast on the arbor F, meshes with a twelve-tooth worm-pinion g, fast on another arbor H, also suspended in bearings under plate G, these arbors being at right angles to each other. A worm h on the arbor H meshes with peripheral teeth of the plate B, the number of these teeth to be seven hundred and thirty, or twice the number of days in one year, inasmuch as there are two revolutions of pinion g each day of twenty-four hours. Another worm 2', fast on arbor F, meshes with a twelve-tooth worm-pinion j, fast on another arbor I, that turns in bearings rising from plate G, and a worm k on the latter arbor meshes with a fifty-nine-tooth worm-wheel J, the hub m of which constitutes part of an inclined bracket K, this hub being loose on a hollow vertical stud a, rising from said plate. The plate G is slotted to permit the engagement of worm 11 with pinion j, and the platestud n is provided at its upper end with a stationary bevel gear-wheel 12, having another bevel gear-wheel q in mesh therewith, this latter gear-wheel being fast on a shaft L, that rotates in bearings rising from the aforesaid An arm 0 of the bracket constitutes a bearing for a vertical stem 5, having bevelgear connection with shaft L, and fast on the stem is a globe M, designed to represent the moon, one half of this globe being arbitrarily distinguished from the other half by any suitable means, so as to denote the light and dark of the moon.

Extending up through the stud u of plate G is a spindle N, having a twenty-four-tooth worm-wheel 25 fast on its lower end and in mesh with the worm-pinion f on arborF aforesaid. The upper end of the spindle N is in universal-joint connection it with a rod 0, on whicha globe P is rigidly secured, this globe representing the earth and having revolution on its axis once in every twenty-four hours. The upper end of rod'O is loose in an eye 11 at one end of a horizontal arm Q, and the other end of this arm is provided with a right-angle rigid stud WV, that turns in the outer end of another arm R, fast on the upper end of pivot-post 0, above specified.

The arm Q and its stud W constitute a crank, and fast to the lower end of the stud is a sprocket-wheel S, connected by a link belt T with a similar wheel U, fast to a sleeve V, loose on pivot-post C, but fast to clock D, this sleeve being extended in opposite directions from a globe W rigid therewith, and

' serving to represent the sun.

The fifty-nine-tooth worm-wheel meshes with a fourteen-tooth pinion at, depending from a disk X, loose on a stud y, rising from plate G, and a pointer 2', fast to the stud, indicates the days of one week delineated upon the disk, radially thereof.

The clock being started and kept running, the various mechanisms above specified will operate synchronous therewith, and the worm h, engaging the peripheral teeth of the stationary plate B, will cause arotation of said clock on its pivot-post once in one year, the periphery of said plate representing the orbit of the earth. Incidental to rotation of the clock the pointer 6, depending from plate G, will mark the days of each month, the months themselves, the seasons, and signs of the Z0- diac properly displayed on the base A, while at the same time the moon and earth globes will revolve around the sun-globe and have rotation on their own axes.

Rotation imparted to 'the arm Q, timed to that of the clock, maintains the predetermined angle of globe P with respect to the globe W, this angle being that of the inclination of the earths axis to the plane of its orbit.

The globe M is timed to have rotation on its axis 'once in every twenty-nine and onehalf days, (approximately one lunar month,) coincident with a revolution in the same period around the globe P, whereby the phases of the moon with respect to the earth are demonstrated.

The fifty-nine-tooth wheel J moves the fourteen-tooth wheel 00 two teeth each day of twenty-four hours, and thus the disk X, having the days of the week delineated thereon, is made to revolve once each week under the stationary pointer z, the position of each radial day-space on said disk with respect to said-pointer at any time determining the ante or post meridian of that particular day.

The clock with the other mechanisms may be set forward or back to correct time, and in case of leap-year the clock may be stopped for twenty-four hours, or the mechanism set back one day, starting again on the 28th of February, it being practical to move the plate G and its connections around plate B without injury to said clock or machinery synchronous therewith.

Having thus described my invention, what I claim as 116W,2L11d desire to secure by Letters Patent, is

1. A tellurian comprising astationary peripherally-toothed circular plate, a fixed pivotaxial revolution once in one year; a globe representing the sun in line with the axis of the clock, a globe representing the earth having a lower axial extension, a spindle having universal-joint connection with said axial extension of the earth-globe, a gear-train connecting the clock and spindle to revolve said earth-globe with said clock as well as to impart diurnal revolution to this latter globe on its own axis, an arm fast on said pivot-post, a stud loose in the outer end of said arm, another arm fast at one end to the stud but having its other end loosely engaged by an upper axial extension of the earth-globe, and gear mechanism connecting the aforesaid clock with said stud, the length of the latter arm being such that said earth-globe is maintained in proper inclination to the plane of its orbit.

2. A tellurian comprising a stationary peripherally-toothed circular plate,afixed pivotpost central of the plate, a clock loose on the pivot-post and having its hour mechanism in gear with the toothed periphery of said plate, the gearing being so timed that the clock has axial revolution once in one year; a globe representing the sun in line with the axis of the clock, a globe representing the earth having a lower axial extension, a spindle having universal-joint connection with said axial extension of the earth-globe, a gear-train connecting the clock and spindle to revolve said earth-globe with said clock as well as to impart diurnal revolution to this latter globe on its own axis, an arm fast on said pivot-post, a stud loose in the outer end of said arm, another arm fast at one end to the stud but having its other end loosely engaged by an upper axial extension of the earth-globe, gear mechanism connecting the aforesaid clock with said stud, and another globe representing the moon also in gear-train with the clock to revolve around the earth-globe and have revolution on its own axis at intervals approximating repetitions of a lunar month.

3. A tellurian comprising a base having calendarial matter in circular arrangement thereon, a peripherally-toothed circular plate fast to the base central of the same and having such diameter as will expose the calendarial matter aforesaid, a fixed pivot-post central of base and plate, a clock loose on the pivot-post and having its hour mechanism in gear with the toothed periphery of said plate, the gearing being so timed that the clock has revolution once a year on its axis; a globe representing the sun in line with the axis of the clock, a globe representing the earth having a lower axial extension, a spindle having universal joint connection with said axial extension of the earth-globe, a gear-train connecting the clock and spindle to revolve said earth-globe with said clock as well as to impart diurnal revolution to this latter globe on its own axis, an arm fast on said pivotpost, a stud loose in the outer end of said arm, another arm fast at one end to the stud, but having its other end loosely engaged by an upper axial extension of the earth-globe, gear mechanism connecting the aforesaid I0 another pointer movable with the clock adj acent to the calendarial matter on the aforesaid base.

In testimony that I claim the foregoing I have hereunto set my hand, at Milwaukee, in

the county of Milwaukee and State of Wis- I 5 cousin, inthe presence of two Witnesses.

CHAS. J. BOEHM. Witnesses:

N. E. OLIPHANT, GEO. W. YOUNG. 

